id summary reporter owner description type status milestone component version severity resolution keywords cc 5787 [multi_index] Suboptimal non-unique hash table vvoznesensky@… Joaquín M López Muñoz "Computational complexity on non-unique hash table index operations are O(). I've prepared a patch: an optional dual-linked list could be used instead of a single-linked one. Please, find a diff in the attachment." Patches closed To Be Determined multi_index Boost 1.47.0 Optimization fixed